class Flash < ActiveRecord::Base
    belongs_to :content
    has_attachment  :storage => :file_system,
                  :min_size => 0.kilobytes,
                  :max_size => 10.megabytes,
                  :path_prefix => 'public/upload' 
    validates_as_attachment
    


    def  full_filename(thumbnail = nil)      
        file_system_path = (thumbnail ? thumbnail_class : self).attachment_options[:path_prefix]      
         File.join(RAILS_ROOT, file_system_path, 'flashes', thumbnail_name_for(thumbnail))      
    end 
end
